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Physics

Physics
In general, which is the cause of a land breeze?

Pressure
Temperature
Heat
None of these

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Physics
As water is cooled from 4 deg C to 0 deg C, its density

Remains same
Decreases
None of these
Increases

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Physics
The weakest of all fundamental forces is

Magnetic force
Gravitational force
Nuclear force
Electrostatic force

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Physics
Materials for rain-proof coats and tents owe their water-proof properties to

specific gravity
surface tension
viscosity
elasticity

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Physics
A radioactive substance does not undergo any change (in mass or charge) during

Beta-emission
Gamma-emission
Oxidation
Alpha-emission

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Physics
Ball bearings are used in cycles, scooters etc to

Reduce the friction between ground and the whee
None of these
Increase the friction between the wheel and the axle
Reduce the friction between the wheel and the axle

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